FVXX21 KWBC 110830 VOLCANIC ASH ADVISORY ISSUED: 2003MAR11/0830Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/018 INFORMATION SOURCE: GOES-8 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUING EMISSION OF GASES AND LIGHT ASH. OBS ASH DATE/TIME: 11/0745Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL250 MOVING SW 2-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 0745Z BUT LOW LEVEL WEATHER CLOUDS MIGHT BE HINDERING ASH DETECTION. THE LAST OBSERVATION OF ASH WAS A PILOT REPORT AT 10/1610Z INDICATING ASH TO FL200. NEXT ADVISORY: WILL BE ISSUED BY 2003MAR11/1430Z. NNNN